[9in1 Air Quality Tester]: This detector can be used to test and display the concentration of PM2.5, PM10, CO, CO2, TVOC, HCHO, , temperature and humidity at the same time. [High Accurate Sensors]: Uses high-precise semiconductor TVOC sensor, electrochemical CO sensor, infrared PM2.5 sensor, temperature and humidity sensor, with high sensitivity, superior interference resistance ability, stable working performance, with low power consumption. [TFT Color Display]: This air quality monitor with a large TFT color display, you can the data is clearly visible and the screen is not dazzling. [Wide Applications]: Real-time detection, automatic refresh data, with multi-use. Suitable for agricultural planting, greenhouse vegetables, production warehouse, material processing, , business offices, and etc. Battery: 1 * 2000mAh lithium battery (included) Display: TFT color display Sensor: semiconductor TVOC sensor, electrochemical CO sensor, infrared PM2.5 sensor, temperature and humidity sensor